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    China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped back to 20% _______ one day in advance.

    A．when books       B．when to book      C．when booking      D．when booked

     

    【答案】

    D

    【解析】

    试题分析：考查状语从句的省略。当状语从句的主语与主句的主语一致，且状语从句中有系动词be的时候，可以把状语从句的主语和be动词一起省略。本题在when和booked之间省略了it is；句意：如果提前一天预订，从北京到上海的机票折扣从百分之60下降到百分之20.故D正确。

    考点：考查状语从句的省略

    点评：当状语从句的主语与主句的主语一致，且状语从句中有系动词be的时候，可以把状语从句的主语和be动词一起省略。如果状语从句中有it is的时候，it is 也可以省略。

     

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    BDU — www. chinadaily. corn. cn / bdu CHINA DAILY LANGUAGE

    BDU—BUSINESS DAILY UPDATE

    Want to keep well informed about the dynamic (充满活力的) pulse of China’s economy?

    Get a glimpse of the most important business activities taking place here every day through Business Daily Update, a service offered by China Daily information via the World Wide Web.

    Placed under 10 categories, over 25 news items appear each day with the top three events lighted all in English. Busi??ness Daily Update is just a few mouse clicks away.

    Subscribe to BDU for an annual fee of  US ＄240. E-mail and fax services are also available upon request.

    For more information, please contact Business Daily Update:

    Tel: (010)64941107,(010)64924488

    Fax:+86-10-64941125

    E-mail: bdu@ chinadaily. corn. en

    Url:http://www. chinadaily. corn. cn/bdu

    1. If you get www..cominto BDU, you can ________.

    A. know everything in China          B. get all kinds of information in the world

    C. get the information in China Daily   D. get all the information out of China

    2. This ad will be very important to ________.

    A. foreign business people                     B. foreign magazines

    C. Chinese teachers                          D. China Daily reporters

    3. To get the information from BDU every day, you must________.

    A. understand newspapers                        B. recognize the mouse

    C. know how to operate a computer       D. buy a fax machine

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